2135215331 has 2 divisors, whose sum is σ = 2135215332. Its totient is φ = 2135215330.

The previous prime is 2135215321. The next prime is 2135215333. The reversal of 2135215331 is 1335125312.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2135215331 is a prime.

It is a super-2 number, since 2×2135215331² = 9118289019474879122, which contains 22 as substring.

Together with 2135215333, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2135215331.

It is not a weakly prime, because it can be changed into another prime (2135215333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1067607665 + 1067607666.

It is an arithmetic number, because the mean of its divisors is an integer number (1067607666).

Almost surely, 2^2135215331 is an apocalyptic number.

2135215331 is a deficient number, since it is larger than the sum of its proper divisors (1).

2135215331 is an equidigital number, since it uses as much as digits as its factorization.

2135215331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2700, while the sum is 26.

The square root of 2135215331 is about 46208.3902662709. The cubic root of 2135215331 is about 1287.6976200378.

The spelling of 2135215331 in words is "two billion, one hundred thirty-five million, two hundred fifteen thousand, three hundred thirty-one".